Here are some useful shell shortcuts that you can use to make your life easier:

CTRL+A - move to beginning of line
CTRL+E - move to the end of the line
CTRL+B - move backward
CTRL+F - move forward
CTRL+D - delete character under cursor
CTRL+K - deletes text from cursor to the end of line
CTRL+X+BACKSPACE - delete text from cursor to the beginning of the line
CTRL+T - exchange character under cursor with previous character
ESC+T - exchange two words before and under cursor
ESC+U - converts text from cursor to the end of the word to UPPERCASE
ESC+L - converts text from cursor to the end of the word to LOWERCASE
CTRL+X+CTRL+E - launch default editor
CTRL+L - Clears screen above current line
CTRL+W - Delete word from cursor position to the left
CTRL+R - Search through command history